      /***   input a and b then show a plus b   ***\
      /***   example: input 34 output7          ***\
,>,
      input two numbers
<
[
 ->>
 +<<
]
      set 1value to 3
>
[
 ->
 +<
]
      set 2value and 1value to 3
>--------
 --------
 --------
 --------
 --------
 --------.
      add ——48 to 3value to show numbers 
